Collina Strada first showed its KEEN collaboration at New York Fashion Week, where designer Hillary Taymour explored how a utilitarian shoe could become a feminine fashion piece. For the Collina Strada x KEEN Jasper Rocks SP 'Black', the upper is cut from black satin. KEEN has added a bungee-lace system so the shoe goes on and comes off more easily. The lining is textile and the sole rubber.